Cov roj hmab O-rings ntsuas li cas?
O-rings yog ib yam ntawm cov ntsaws ruaj ruaj tshaj plaws hauv ntiaj teb. O-rings yog siv nyob rau hauv ntau yam kev lag luam vim lawv qhov ntau thiab tsawg ntawm kev tsim khoom. Cov khoom siv sib txuas no tiv thaiv cov roj los yog kua los ntawm kev qhib, tab sis dhau sijhawm lawv tuaj yeem hnav thiab yuav tsum tau hloov. Yog tias koj npaj yuav hloov koj lub nplhaib O-ring, qhov haum zoo yog qhov tseem ceeb rau kev ua tiav zoo.
Roj Hmab O-rings yog ntsuas nyob rau hauv ntau qhov ntau thiab tsawg los xyuas kom haum thiab haum rau kev siv. Kev ntsuas tseem ceeb siv los qhia txog O-ring suav nrog:
1. Sab hauv txoj kab uas hla (ID): Qhov no yog qhov ntsuas ntawm sab hauv txoj kab uas hla ntawm O-ring thaum nws nyob hauv nws lub xeev so (tsis ncab lossis compressed). Feem ntau ntsuas los ntawm sab hauv ntug ntawm O-ring.
2. Sab nraud txoj kab uas hla (OD): Qhov no yog qhov ntsuas ntawm lub voj voog sab nraud ntawm O-ring nyob rau hauv nws lub xeev so. Ntxiv dua thiab, feem ntau nws yog ntsuas los ntawm ntug sab nraud ntawm O-ring.
3. Hla-sectional txoj kab uas hla (CS): Kuj hu ua thickness los yog dav, qhov ntsuas no yog hais txog txoj kab uas hla ntawm O-ring thaum nws nyob rau hauv ib ncig los yog annular cross-section. Nws feem ntau hu ua "dav" ntawm O-ring.
O-ring ID, OD, thiab CS ntsuas yog feem ntau teev nyob rau hauv millimeters (mm) lossis nti (inch). Piv txwv li, O-ring tej zaum yuav raug cim "20mm ID x 30mm OD x 5mm CS," qhia ib txoj kab uas hla ntawm 20mm, sab nraud txoj kab uas hla ntawm 30mm, thiab ib tug cross-sectional txoj kab uas hla ntawm 5mm.